<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .container {
            width: 100%;
            height: 1200px;
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .container .box{
            width: 400px;
            height: 200px;
            background-color: #139daf;
            border: 1px solid #000;

            display: flex;
            flex-direction: row;
            justify-content: center;
            align-items: center;
        }
        .container .buttom {
            /* 调整盒子样式 */
            width: 100px;
            height: 50px;
            background-color: #0b8d3d;
            border: #000 1px solid;
            box-sizing: border-box;
            /* 调整文字 */
            text-align: center;
            padding-top: 14px;
        }
    </style>
</head>
<body>
    <div class="container">
        <class class="box">
            <div class="buttom">
                进入
            </div>
            &nbsp;
            &nbsp;
            <div class="buttom">
                退出
            </div>
        </class>
    </div>
</body>
</html>